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<div id="topics">
    <div id="toolDescription" class="largesize">
        <h2>计算密度</h2><p/>
        <h2><img src="../images/GUID-38AD3C19-0400-4E5A-9282-BDE42F2BBFC1-web.png" alt="Calculate Density"></h2>
        <hr/>
    <p>The Calculate Density tool creates a density map from point features by spreading known quantities of some phenomenon (represented as attributes of the points) across the map. The result is a layer of areas classified from least dense to most dense.   

    </p>
    <p>For point input, each point should represent the location of some event or incident, and the result layer represents a count of the incident per unit area.  A higher density value in a new location means that there are more points near that location.  In many cases, the result layer can be interpreted as a risk surface for future events. For example, if the input points represent locations of lightning strikes, the result layer can be interpreted as a risk surface for future lightning strikes.
    </p>
    <p>Other use cases of this tool include the following:
        <ul>
            <li>Creating crime-density maps to help police departments properly allocate resources to high crime areas.
            </li>
            <li>Calculating densities of hospitals within a county.  The result layer will show areas with high and low accessibility to hospitals, and this information can be used to decide where new hospitals should be built.
            </li>
            <li>Identifying areas that are at high risk of forest fires based on historical locations of forest fires.
            </li>
            <li>Locating communities that are far from major highways in order to plan where new roads should be constructed.
            </li>
        </ul>
        
    </p>
    </div>
    <!--Parameter divs for each param-->
    <div id="inputLayer">
        <div><h2>选择计算密度所使用的点图层</h2></div>
        <hr/>
        <div>
            <p>The point layer on which the density will be calculated.
            </p>
            <p>除了从地图中选择图层外，还可以在下拉列表的底部选择 <b>浏览图层</b>，以浏览至大数据文件共享数据集或要素图层中的内容。  
            </p>
        </div>
    </div>
    <div id="fields">
        <div><h2>选择计算密度使用的一个或多个字段</h2></div>
        <hr/>
        <div>
            <p>Provide  one or more fields specifying the number of incidents at each location.  For example, if you have points that represent cities, you can use a field representing the population of the city as the count field, and the resulting population density layer will calculate larger population densities near cities with larger populations.
            </p>
            <p>The density for the count of points will always be calculated.   If no fields are selected, each location will be assumed to represent a single count.
            </p>
        </div>
    </div>
    <div id="binType">
        <div><h2>选择条柱形状</h2></div>
        <hr/>
        <div>
            <p>The shape of bins that points are aggregated into and used for the density calculation.
            </p>
        </div>
    </div>
    <div id="binSizing">
        <div><h2>选择用于计算密度的条柱大小</h2></div>
        <hr/>
        <div>
            <p>The size of the bins generated. For a square bin, the size represents the height of the square. For hexagon, the size represents the height of the hexagon (from parallel sides).
            </p>
        </div>
    </div>
    <div id="weight">
        <div><h2>选择要应用的密度加权</h2></div>
        <hr/>
        <div>
            <p>The type of weighting applied to the density calculation. There are two options:
                <ul>
                    <li> <b>Uniform</b>&mdash;This calculates a magnitude per area.
                    </li>
                    <li> <b>Kernel</b>&mdash;Applies a kernel function to fit a smooth tapered surface to each point.
                    </li>
                </ul>
                
            </p>
        </div>
    </div>
    <div id="neighborhood">
        <div><h2>选择邻域大小</h2></div>
        <hr/>
        <div>
            <p>The size of the area used to calculate the density. The neighborhood size must be larger than the bin size.
            </p>
        </div>
    </div>
    <div id="areaUnits">
        <div><h2>选择密度的输出单位</h2></div>
        <hr/>
        <div>
            <p>The desired output units of the density values. By default, this is set to the units in your map (for example, square meters). If density values are very small, you can increase the size of the area units (for example, square meters to square kilometers) to return larger values. The values only scale the result.  

            </p>
        </div>
    </div>
    <div id="timeSlicing">
        <div><h2>使用时间片计算密度（可选）</h2></div>
        <hr/>
        <div>
            <p>如果输入点图层上启用了时间且类型为时刻，则可以使用时间划分进行分析。使用时间时可设置以下三个参数：
                <ul>
                    <li>  <b>时间间隔</b>
                    </li>
                    <li> <b>时间步长</b>
                    </li>
                    <li> <b>参考时间</b>
                    </li>
                </ul>
                
            </p>
            <p>假设您拥有表示时间为一年的数据且希望使用周长度的时间片进行分析。为此，您需要将 <b>时间间隔</b>设置为 <code>1 周</code>。
            </p>
            <p> 假设您拥有表示时间为一年的数据且希望使用每月的第一周进行分析。为此，您需要将 <b>时间间隔</b>设置为 <code>1 周</code>，将 <b>时间步长</b>设置为 <code>1 个月</code>并将 <b>参考时间</b>设置为 <code>1 月 1 日 12:00 am</code>。
            </p>
        </div>
    </div>
    <div id="timeInterval">
        <div><h2>计算密度使用的时间间隔</h2></div>
        <hr/>
        <div>
            <p>用于划分数据的时间间隔。时间间隔可单独使用或与 <b>时间步长</b>或 <b>参考时间</b>参数一起使用。
            </p>
            <p> 如果您想要创建在每个星期一 9:00 a.m. 到 10:00 a.m.之间发生的时间片，则需要将 <b>时间间隔</b>设置为 <code>1 小时</code>，将 <b>时间步长</b>设置为 <code>1 周</code>并将 <b>参考时间</b>设置为 <code>星期一 9:00:00 a.m.</code>。
            </p>
        </div>
    </div>
    <div id="timeStep">
        <div><h2>计算密度使用的时间步长</h2></div>
        <hr/>
        <div>
            <p> 用于计算时间片的步长。 <b>时间步长</b>可以单独使用或与 <b>时间间隔</b>和/或 <b>参考时间</b>一起使用。 <b></b> <b></b>
            </p>
            <p> 如果您想要创建在每个星期一 9:00 a.m. 到 10:00 a.m.之间发生的时间片，则需要将 <b>时间间隔</b>设置为 <code>1 小时</code>，将 <b>时间步长</b>设置为 <code>1 周</code>并将 <b>参考时间</b>设置为 <code>星期一 9:00:00 a.m.</code>。
            </p>
        </div>
    </div>
    <div id="timeReference">
        <div><h2>用于对齐时间划分的参考时间</h2></div>
        <hr/>
        <div>
            <p>用于对齐时间划分的日期和时间。 <b>时间步长</b>将从参考时间开始并相对于参考时间倒计时。
            </p>
            <p> 如果您想要创建在每个星期一 9:00 a.m. 到 10:00 a.m.之间发生的时间片，则需要将 <b>时间间隔</b>设置为 <code>1 小时</code>，将 <b>时间步长</b>设置为 <code>1 周</code>并将 <b>参考时间</b>设置为 <code>星期一 9:00:00 a.m.</code>。
            </p>
        </div>
    </div>
    <div id="spatialReference">
        <div><h2>SpatialReference (wkid)</h2></div>
        <hr/>
        <div>
            <p>这是预发行版本中的临时参数，用于设置处理空间参考。许多大数据工具都需要将投影坐标系用作处理的空间参考。默认情况下，该工具将使用输入坐标系，但是，如果输入坐标系为地理坐标系，则将无法使用。要设置投影坐标系，请输入 WKID。例如， <b>Web Mercator</b> 将被输入为 <code>3857</code>。
            </p>
        </div>
    </div>
    <div id="dataStore">
        <div><h2>选择数据存储</h2></div>
        <hr/>
        <div>
            <p>这是预发行版本中的临时参数，用于设置将存储结果的数据存储。这两个数据存储都是  ArcGIS Data Store 的一部分。如果选择时空数据存储但是尚未安装该存储，将无法使用该工具。 </p>
        </div>
    </div>
    <div id="outputName">
        <div><h2>结果图层名称</h2></div>
        <hr/>
        <div>
            <p> 在 <b>我的内容</b>中创建并添加到地图中的图层的名称。默认名称基于工具名称以及输入图层名称。如果该图层已存在，将无法使用该工具。
            </p>
            <p>使用 <b>将结果保存到</b>下拉框，可以在 <b>我的内容</b>中指定文件夹的名称，结果将保存到该文件夹中。
            </p>
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